HASTELLOY C-4 alloy is a nickel-chromium-molybdenum alloy with outstanding
high-temperature stability as evidenced by high ductility and corrosion resistance even after aging in the 1200 to 1900 °F (649 to 1038°C) range. This alloy resists the formation of grain-boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process applications in the as-welded condition. C-4 alloy also has excellent resistance to stress-corrosion cracking and to oxidizing atmospheres up to 1900°F (1038°C).

Application: Hastelloy C-4 (Ni-Cr- Mo) having excellent thermal stability and toughness at a high temperature, for and the stress corrosion cracking under high temperature oxidizing atmosphere having good resistance. Suitable for all types hot mineral acids, chlorine-containing medium, acetic acid, acetic anhydride, water and brine solution and other corrosive substances.

Feature:

Hastelloy C-4 Operating temperature about: -200 to + 400 ° C

Main features: good organizational stability, after welding can be used directly.

Description:

Physical properties

>Density (g/cm3): 8.64

>Melting point (℃): 1350~1400

Chemical composition(%)

Grade

%

Ni

Cr

Mo

Fe

C

Mn

Si

Co

S

P

Ti

Hastelloy C-4

Min.

65

14

14

Max.

18

17

3.0

0.01

1.0

0.08

2.0

0.010

0.025

0.70

Mechanical properties

Yield Strength (Mpa)

Tensile Strength (Mpa)

Elongation, %

Hardness, HB

Incoloy 825

365

783

55

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